Ahmed Matiur Rahman We think of frozen food as a new invention, but it is actually one of the oldest methods known for preserving food. From the days when man first inhabited cold regions, he froze fish, game and other meats for future use. [...]
Archive for the ‘Do You Know’ Category
May 1st, 2010 - 12:00 am § in Do You Know
When Did women begin to style their hair?
Ahmed Matiur Rahman Considering what we know about women, it probably won’t surprise you to learn that women have dressed and decorated their hair from as far back as we have any records in history! [...]
April 1st, 2010 - 12:00 am § in Do You Know
What is Peat?
Ahmed Matiur Rahman Peat is not coal. It might be called a step in the process of making coal. Coal itself is made of the remains of ancient trees and plants that grew in swampy jungles in warm, moist climates hundreds of millions of years ago. These trees and plants fell into the swamp waters. [...]
February 1st, 2010 - 12:01 am § in Do You Know
Why does fever occur?
Ahmed Matiur Rahman A fever is a rise in internal body temperature to levels that are considered to be above normal. Average body temperature is about 98.6°F or 37°C, and temperatures above 100.4° F or 38°C are generally considered to be febrile. Body temperature is determined by the body’s [...]
December 5th, 2009 - 5:38 am § in Do You Know
Who built the first castle?
Ahmed Matiur Rahman The idea of a castle is connected with defense. In fact, the word ‘castle’ comes from a Latin word weaning fort. So a castle was a home of a ruler or lord that could be defended. Even in ancient Egypt, the royal palaces were fortified with towers and parapets, and so were lik[...]
November 1st, 2009 - 12:01 am § in Do You Know
How many odors can we smell?
Ahmed Matiur Rahman Compared to many animals, man’s ability to smell is not very good at all. In fact, it is probable that as men developed, his sense of smell became less and less keen, until today he is chiefly a “visual animal”. [...]
October 1st, 2009 - 6:18 am § in Do You Know
Where did olives come from?
The original home of the olive is southwest Asia. For many centuries olives have provided food for people and have been carried by caravan to distant markets. An unusual thing about the olive is that it cannot be eaten fresh from the tree. The bitter taste of the fruit must be removed by pickling, [...]
September 7th, 2009 - 9:43 am § in Do You Know
How Aluminium Foil is made?
Aluminium is the most abundant metal in the earth’s crust. Actually, it makes up between 7 and 8 percent of the crust. But aluminium is never found in a pure state in nature. Rather, it is combined with other chemical elements in compounds that are very hard to break down. The most important ore o[...]